How to politely tell someone to leave you alone?

We hired this new guy at work about a month ago. He was pretty cool and funny. So he asked for my number and I gave it to him. But I think he thinks I like him, and I don’t. He will text me every night and it’s getting kind of annoying. And sometimes he makes sex jokes and it makes me feel uncomfortable. How do I... show more We hired this new guy at work about a month ago. He was pretty cool and funny. So he asked for my number and I gave it to him. But I think he thinks I like him, and I don’t. He will text me every night and it’s getting kind of annoying. And sometimes he makes sex jokes and it makes me feel uncomfortable. How do I politely let him know I don’t like him more than a friend without being rude and making it awkward at work